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Selling and trading on ReefCentral.

Most seemed to work today. Except the first, which could just be found as a sticky in the Beginner section, and the Calfo one, which if you search the forum for "calfo" and "seahorse" you'd probably find it.

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Inventor of the easy-to-DIY upflow scrubber, and also the waterfall scrubber that everyone loves to build:
http://www.reefcentral.com/forums/showthread.php?t=1424843